Substrate-Controlled Highly Diastereoselective Synthesis of Primary and Secondary Diorganozinc Reagents by a Hydroboration/Boron–Zinc Exchange Sequence
作者:Eike Hupe、M. Isabel Calaza、Paul Knochel
DOI:10.1002/chem.200204662
日期:2003.6.16
The scope of substrate-controlleddiastereoselectivehydroborations can be considerably enhanced by a boron-zincexchange reaction, providing organozinc derivatives that react with a broad range of electrophiles. Even normally unreactive boronic esters, obtained by Rh-catalyzed hydroboration with catecholborane, react readily with iPr2Zn providing the corresponding zinc reagents in high diastereoselectivity